Die-stock attachment



1,521,194 .P. JOHNSON DIE STOCK ATTACHMENT Filed Sept. 19, 1922 ZZZ/870301.

7 which Patented Dec; 30, 1924.

iih i *STATES LSZLlQd FFECEQ PERCY JOHNSON, OF BEAUMONT, TEXAS.

DIE-STOCK ATTACHMENT.

To all whom it may concern:

Be it known that I, Pnnor JoHNsoN, a citizen of the United States, residing at Beaumont, in the county of Jelterson, State of Texas, have invented a certain new and useful Die-Stock Attachment, said device making it possible to turn the die-stock by power instead of manually,

The invention has "for its object to provide a device of the clraracter indicated which can be. used with die-stocks of ordinary construction when the manually operating die-stock arms are dispensed with, and which will be of simple construction so as to be readily applied and which may be quickly adjusted to suit the conditions to be met.

The invention consists in features of construction and combination which will be hereinafter particularly described and then sought to be clearly defined by the claims,

reference being had to the accompanying drawing forming a part hereof, and in Figure 1 is a plan of an ordinary stock with the improved attachn'ient applied;

Figure 2 is a perspective of one member of the attachment;

Figure 3 is a cross section through the lapping arms of the attachment, with the clamp in end elevation;

Figure iis a front elevation of the at tachmeut with one arm broken away.

In the drawing the numeral 1 designates a die-stock of any approved type usually employed for metal thread cutting and ordinarily having socket extensions in the ends of? which are fitted arms usually em ploycd to be grasped by the operator for turning the die-stock and which needs no detailed description as it does not constitute the present invention, but with which the present invention is designed to be used.

The present invention consists in the attachment comprising two arms, 2 adapted to lie one upon the other and having outturned or laterally deflected ends provided with inwardly projected pintles or studs 3 designed to enter the extension sockets of the die-stockand replace the arms operating lovers ordinarily provided for die stocks, as illustrated in Figure 1 of the drawing. The lapping portions of the arms 2 pass through a clamp 4 as illustrated in the drawings and after adjustment to bring their pintles or studs into the extension sockets of the die-stock the two arms are held fixedly in the clamp by suitable means, for instance by screw threaded thumb nuts 6 so as to hold the arms to their adjustment. The clamp t is provided with a projecting stem 5 tor connecting the attachment to a power transmission means or any appropriate type (not shown) so as to rotate the attachment and die-stock carried by it under either a right or a left hand direction of rotation as may he called for by the work in hand.

By reason of the construction described the device may be quickly applied and adjusted to the requirements of the die-stock; its compactness calls for less space than the ordinary stock operating arms used; it can be readily assembled and disassembled as necessity may require.

I have described the preferred details of construction and arrangement of parts but changes may be made therein without departing from the scope of the invention as sought to be defined by the appended 7 claims.

Having described my invention and set forth its merits what I claim is 1. The die-stock attachment comprising separate arms formed with means at their ends for attachment to a part oi? the die stock and provided with means for clamping the arms one to the other in adjusted relation;

2. The die stock attachment comprising separate arms, each provided at one end with a stud to enter extension sockets ol the die-stock, one arm lapping over the other and a clamp receiving the; lapped portions of the arms to secure them together.

3. The, die-stock attachment comprising adjustably related arms provided at one end with means for connection with part of a die-stock means for locking the arms in adjustment, and means for connecting the attachment with a power source.

4. The die-stock attachment comprising adjustably related arms provided at one end with means for connection with a part of a die-stock, a clamp receiving and holding the arms in their adjustment, and means projecting from the clamp for connection with a source of power to rotate the attachment.

PERCY JOHNSON.

Witness:

A. M. HOFFMAN.

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